#255366#255366

#255366 is a dark, muted cyan. Relative luminance 0.075; OKLCH L 41.9% C 0.059 H 227.8°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#255366
RGB	rgb(37, 83, 102)
HSL	hsl(198, 47%, 27%)
HSV	hsv(198, 64%, 40%)
CMYK	cmyk(63.7%, 18.6%, 0%, 60%)
CIE-LAB	lab(33.00, -9.37, -15.72)
CIE-LCH	lch(33.00, 18.30, 239.20°)
OKLab	oklab(41.86% -0.0398 -0.0438)
OKLCH	oklch(41.86% 0.059 227.8)
XYZ	xyz(6.2535, 7.5385, 13.6933)
Luminance	0.0754 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#255366 #663825

analogous

#256658 #255366 #253366

triadic

#255366 #662553 #536625

tetradic

#255366 #582566 #663825 #336625

square

#255366 #582566 #663825 #336625

split-complementary

#255366 #662533 #665825

monochromatic

#081216 #152E39 #255366 #357893 #499BBD

Accessibility & contrast

On white

8.37

#255366 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#255366 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #255366

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##255366	#FFFFFF	#000000	##FFFFFF
##255366	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#495167

Deuteranopia (green-blind)

#404B66

Tritanopia (blue-blind)

#005859

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #255366;
/* rgb */ color: rgb(37, 83, 102);
/* oklch */ color: oklch(41.9% 0.059 227.8);

Tailwind

colors: {
  custom: {
    50: '#678391',
    500: '#255366',
    950: '#000000',
  },
}

SCSS

$custom: #255366;
$custom-light: #678391;
$custom-dark: #000000;

JSON

{
  "hex": "#255366",
  "rgb": {
    "r": 37,
    "g": 83,
    "b": 102
  },
  "hsl": {
    "h": 197.538,
    "s": 46.763,
    "l": 27.255
  },
  "oklch": {
    "l": 0.41856,
    "c": 0.05919,
    "h": 227.8
  },
  "luminance": 0.07539
}

Semantic roles & 50–950 ramp

primary

#255366

secondary

#99644E

accent

#7851D6

background

#F6F8F8

surface

#EBEFF0

border

#C6CACB

text

#060A0C

muted

#7A7C7D

Preview Lab

Preview with #255366

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →